code: def setUp(self) -> None:
      data_sample1 = TextRecogDataSample()
      data_sample1.gt_text = LabelData(item="hello")
      data_sample2 = TextRecogDataSample()
      data_sample2.gt_text = LabelData(item="01abyz")
      data_sample3 = TextRecogDataSample()
      data_sample3.gt_text = LabelData(item="123456789")
      self.gt = [data_sample1, data_sample2, data_sample3]
  
file_path: mmocr/tests/test_models/test_textrecog/test_module_losses/test_ce_module_loss.py
imports: from unittest import TestCase
  import torch
  from mmengine.structures import LabelData
  from mmocr.models.textrecog.module_losses import CEModuleLoss
  from mmocr.structures import TextRecogDataSample
label_desc: Use image node_id 1 for calling the TestCEModuleLoss obj's underlying member method code with example usage: obj.setUp() without return types